Accurate Closed-Form Approximations to Channel Distributions of RIS-Aided Wireless Systems,arXiv - CS - Performance

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Accurate Closed-Form Approximations to Channel Distributions of RIS-Aided Wireless Systems
arXiv - CS - Performance Pub Date : 2020-07-10 , DOI: arxiv-2007.05221
Liang Yang, Fanxu Meng, Qingqing Wu, Daniel Benevides da Costa, and Mohamed-Slim Alouini

This paper proposes highly accurate closed-form approximations to channel distributions of two different reconfigurable intelligent surface (RIS)-based wireless system setups, namely, dual-hop RIS-aided (RIS-DH) scheme and RIS-aided transmit (RIS-T) scheme. Differently from previous works, the proposed approximations reveal to be very tight for arbitrary number $N$ of reflecting metasurface's elements. Our findings are then applied to the performance analysis of the considered systems, in which the outage probability, bit error rate, and average channel capacity are derived. Results show that the achievable diversity orders $G_d$ for RIS-DH and RIS-T schemes are $N-1

中文翻译：

RIS 辅助无线系统信道分布的精确闭式近似

本文提出了两种不同的基于可重构智能表面 (RIS) 的无线系统设置的信道分布的高精度闭式近似，即双跳 RIS 辅助 (RIS-DH) 方案和 RIS 辅助传输 (RIS-T) ）方案。与以前的工作不同，所提出的近似显示对于任意数量的反射超表面元素非常严格。然后将我们的发现应用于所考虑系统的性能分析，其中推导出中断概率、误码率和平均信道容量。结果表明，RIS-DH 和 RIS-T 方案可实现的多样性阶数 $G_d$ 为 $N-1

更新日期：2020-07-13

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